From the code itself:
§ 32-5-241. Auxiliary lamps
d) Special restriction on lamps.
(1) Any lighted lamp or illuminated device upon a motor vehicle other than head lamps, spot lamps, auxiliary lamps or flashing front direction signals which projects a beam of light of an intensity greater than 300 candlepower shall be so directed that no part of the beam will strike the level of the roadway on which the vehicle stands at a distance of more than 75 feet from the vehicle.
(2) No person shall drive or move any vehicle or equipment upon any highway with any lamp or device thereon displaying a red light visible from directly in front of the center thereof. This section shall not apply to authorized emergency vehicles.
(3) Any vehicle may be equipped with flashing lamps which may be used for the purpose of warning the operators of other vehicles of the presence of a vehicular traffic hazard requiring the exercise of unusual care in approaching, overtaking or passing, and when so equipped may display such warning in addition to any other warning signals required by this section. The lamps used to display such warning to the front shall be mounted at the same level and as widely spaced laterally as practicable and shall display simultaneously flashing white or amber lights, or any shade of color between white and amber.
The lamps used to display such warning to the rear shall be mounted at the same level and as widely spaced laterally as practicable, and shall show simultaneously flashing amber or red lights, or any shade of color between amber and red. These warning lights shall be visible from a distance of not less than 1,500 feet under normal atmospheric conditions at night.
(4) Flashing lights may be used on motor vehicles as a means of indicating a right or left turn; a stop lamp may pulsate with different intensities provided that it meets at all intensities the provisions of subdivision (2) of subsection (b) of this section; and the warning lights on emergency vehicles may flash.
From that section:
No red in the front
However, you could be ticketed for this section
§ 32-5-252. Unapproved devices
(a) No person shall have for sale, or offer for sale for use upon or as a part of the equipment of a motor vehicle, trailer or semitrailer, or use upon any such vehicle any head lamp, auxiliary or fog lamp, rear lamp, signal lamp or reflector, which reflector is required hereunder, or parts of any of the foregoing which tend to change the original design or performance, unless of a type which has been submitted to the director and approved by him. The foregoing provisions of this section shall not apply to equipment in actual use when this section is adopted or replacement parts therefor.
(b) No person shall have for sale, sell or offer for sale for use upon or as a part of the equipment of a motor vehicle, trailer or semitrailer any lamp or device mentioned in this section which has been approved by the director unless such lamp or device bears thereon the trademark or name under which it is approved so as to be legible when installed.
(c) No person shall use upon any motor vehicle, trailer or semitrailer any lamps mentioned in this section unless said lamps are mounted, adjusted and aimed in accordance with instructions of the director.
(d) The director is hereby authorized to approve or disapprove lighting devices and to issue and enforce regulations establishing standards and specifications for the approval of such lighting devices, their installation, adjustment and aiming and adjustment when in use on motor vehicles. Such regulations shall correlate with and, so far as practicable, conform to the then current standards and specifications of the society of automotive engineers applicable to such equipment.
(e) The director is hereby required to approve or disapprove any lighting device, of a type on which approval is specifically required in this chapter, within a reasonable time after such device has been submitted.
(f) The director is further authorized to set up the procedure which shall be followed when any device is submitted for approval.
(g) The director, upon approving any such lamp or device, shall issue to the applicant a certificate of approval together with any instructions determined by him.
(h) The director shall publish lists of all lamps and devices by name and type which have been approved by him.
Basically, unless the director has said “Yes, you can have neons” They can ticket you.